Island



(No Model.)

H. J. HALL.

swme BACK ADJUSTER FOB. CAMERAS.

Patented July 16 H. I II/ 7.7 lNVENTOH A "URI/5Y8.

IIIIIIHI fifllllllllliii' WITNESSES:

UNITED STATES PATENT OFFICE.

HENRY J. HALL, OF \VICKFORD, RHODE ISLAND.

SWING-BACK ADJUSTER FOR CAMERAS.

SPECIFICATION forming part of Letters Patent No. 542,867, dated July 16. 1895.

Application filed May 16,1895. Serial No. 549,556\ (No model.)

To ctZZ whom it may concern:

Be it known that I, HENRY J. HALL, of Wickford, in the county of Washington and State of Rhode Island, have invented a new and Improved Swing-Back Adjuster for Cameras, of which the following is a full, clear, and exact description.

My invention relates to a camera attachment; and it has for its object to provide a means for securingahorizontal swingin cameras of a greater amplitude than has been attained by the majority of attachments for this purpose, the attachment being capable of permitting a camera to swing to the right or to the left from its normal position about thirty degrees.

A further object of this invention is to so construct the attachment that it may be expeditiously and conveniently manipulated and applied to any form of camera.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of the attachment. Fig. 2 is an end view thereof. Fig. 3 is a partial plan View of a slightly-modified form of the attachment. Fig. 4: is an end view of the form of attachment shown in Fig. 3; and Fig. 5 is a section taken transversely through the attachment, practically on the line 5 5 of Fig. 3.

In carrying out the invention the camera is attached to a back sill A, which is centrally pivoted at near its forward edge to a suitable base-fratne 13. The back sill is provided preferably with a concavity or recess 11 at its rear edge near the center in order that the attachment will occupy but little extra space, and at the recessed portion of the back sill a plate 12 is secured on its under face, extending beyond its rear edge in a horizontal direction. The plate may be given any desired shape, but usually it is somewhat of a segmental form, as illustrated; and a second plate 13 is located beneath the plate 12, the plate 13 being secured in any suitable or approved manner to the upper surface of the base-frame, over which the back sill moves.

A transverse slot 14 is produced in the central portion of both of the plates 12 and 13. A longitudinal slot 15 is made in the upper plate 12, crossing the transverse slot 14 in the said plate.

In the form of the device shown in Fig. 1 the slot 15 is curved, but in the form of the device shown in Fig. 3 the slot is shown as straight in order that little extra room shall be taken up. Adjacent to the outer longitudinal wall of the slot 15 a rack 16 is constructed, being usually embossed upon or attached to the top of the plate 12. Under the form of construction shown in Fig. 1 an arm 17 is projected from one side of the under plate 13, and a lever 18 isfnlcru med upon the outer extremity of the said arm, extending inward under the plate 13 to the slot 14 therein, and the inner end of the lever is provided with a stud or enlargement 18, as shown in Figs. 2 and 4-.

A screw 20 is firmly secured in the enlarged end of the-lever 18, and the said screw is adapted to travel in both the transverse and longitudinal slots of the aforesaid plates. A disk 22 is loosely mounted on the said screw, adapted to be operated by the thumb in the manipulation of the attachment, and to that end the disk is milled at its edge, and a pinion 21 is firmly secured to the bottom of the said disk 22, the pinion being adapted to mesh with the rack 16 when the screw is traveling in the longitudinal slot of the upper plate 12. The disk and pinion are held in position by a nut 23 upon the upper end of the said screw.

In the form of the device shown in Figs. 3 and 4 the arm 17 (shown in Fig. 1) is dispensed with, and the lever is fulcrumed immediately beneath the body portion of the plate 13. The camera is held in a normal position and the plates are centered one upon the other by causing the screw 20 to enter the transverse slots 14in the plates, the nut 23 having been previously loosened, and when such entrance is elt'ected the nutis screwed firmly down on the disk 22, preventing the back sill from moving on the base-frame.

Any desired side adjustment of the camera within a limit of about thirty degrees from the normal position may be attained by loosening the nut 23 and carrying the screw 20in the longitudinal slot 15 of the upper plate, whereupon the upper plate may be moved on its pivot and secured when the desired position is reached by tightening up thesaid nut 23.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- 1. A horizontal adjusting device for cameras, the same consisting of a support, a sill pivoted thereon, the sill and support being provided with extensions one above the other, both extensions being provided each with a transverse slot similarly located, and one of the extensions with a longitudinal slot, a rack located adjacent to the longitudinal slot, a lever, a pin carried. by the lever and adapted to travel in the slots of the extensions, a pinion carried by the pin,and means for locking the pinion, as and for the purpose set forth.

2. The combination, with a support, a sill pivoted on said support, extensions from the support and sill, located one above the other, both extensions being provided with a similarly located transverse slot, and a partition projected from the sill, having a longitudinal slot meeting the transverse slot, of a lever fulcrumed upon the support, a pin carried by the said lever and adapted to travel in the slots of the extensions, a rack formed upon the sill extension adjacent to its longitudinal slot, a pinion carried by the said pin, adapted for engagement with the said rack, and a looking device carried by the pin, whereby the pinion may be held stationary at any desired point in the length of either of the slots, as and for the purpose specified.

3. A horizontal adjusting device for cameras, the same consisting of a sill, a support, extensions from the rear of the sill and support, located one above the other, the said sill and support being pivotally connected, a lever fulcrumed upon the support, carrying a pin adapted to travel in transverse slots in the said extensions and in a longitudinal slot in one of the extensions, a pinion and looking device carried by the pin, and a rack attached to the extensionhaving the longitudinal slot, being adapted for engagement with the said pinion, as and for the purpose specified.

HENRY J. HALL. Witnesses:

ELMER E. ADAMS, CHARLES A. TODD. 

